Jim, Dave:

Overnight h1fw0 has been stable while writing only science frames. Today we reconfigured it to also write second and minute trend frame files (so it is only not writing commissioning frames). It crashed on the next 10 minute point. We replaced the fiber optics cable connecting h1fw0 with the Fujitsu switch, it still crashed. Finally we power cycled h1ldasgw0 (solaris machine) and it fw0 has been stable since 12:20 PDT.